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Finding the Fourth Proportional to 378,257.80, 567,453.78 and 125,553.40

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Solution

The fourth proportional to 378,257.80, 567,453.78 and 125,553.40 is: 188,352.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,257.80 : 567,453.78 = 125,553.40 : x
  2. Step 2: Convert to fraction form
    378,257.80/567,453.78 = 125,553.40/x
  3. Step 3: Cross multiply
    378,257.80x = 567,453.78 × 125,553.40
  4. Step 4: Simplify right side
    378,257.80x = 71,245,751,421.85
  5. Step 5: Solve for x
    x = 71,245,751,421.85/378,257.80
  6. Step 6: Final answer
    x = 188,352.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.